Seeking some suggestions to improve my timesheet

Gurus of excel.
Before I start I have attached an example sheet for better understanding.

I am building a timesheet to track the following:

• Total Time worked.
• Time worked over 40 hours
• Breakdown of the type of work undertaken.
• Holidays taken
• Total time less holidays.

I am using a SUMIF to get bulletpoints 1 & 3
Formatting seems to be letting me down for Time over 40 hours

I want to know if there is a simple way of discounting the holiday hours? Although this sample is basic and shows only holidays I also have to include flexi time taken etc.